/**  * 连接LDAP  */  @SuppressWarnings({ "rawtypes", "unchecked" })  public LdapContext connetLDAP() throws NamingException {      // 连接Ldap需要的信息      String ldapFactory = "com.sun.jndi.ldap.LdapCtxFactory";      String ldapUrl = "ldap:/IP:port";// url      String ldapAccount = "cn=root"; // 用户名      String ldapPwd = "password";//密码      Hashtable env = new Hashtable();      env.put(Context.INITIAL_CONTEXT_FACTORY, ldapFactory);      // LDAP server      env.put(Context.PROVIDER_URL, ldapUrl);      env.put(Context.SECURITY_AUTHENTICATION, "simple");      env.put(Context.SECURITY_PRINCIPAL, ldapAccount);      env.put(Context.SECURITY_CREDENTIALS, ldapPwd);      env.put("java.naming.referral", "follow");      LdapContext ctxTDS = new InitialLdapContext(env, null);      return ctxTDS;  } 

  // 添加      public void testAdd() throws Exception {          LdapContext ctx = connetLDAP();          Attributes attrs = new BasicAttributes(true);          Attribute objclass = new BasicAttribute("objectclass");          // 添加ObjectClass          String[] attrObjectClassPerson = { "inetOrgPerson", "organizationalPerson", "person", "top" };          Arrays.sort(attrObjectClassPerson);          for (String ocp : attrObjectClassPerson) {              objclass.add(ocp);          }          attrs.put(objclass);          String uid = "zhangsan";          String userDN = "uid=" + uid + "," + "cn=users,dc=cas,dc=mydc";          // 密码处理          // attrs.put("uid", uid);          attrs.put("cn", uid);          attrs.put("sn", uid);          attrs.put("displayName", "张三");          attrs.put("mail", "abc@163.com");          attrs.put("description", "");          attrs.put("userPassword", "Passw0rd".getBytes("UTF-8"));          ctx.createSubcontext(userDN, attrs);      } 

//删除      public void testRemove() throws Exception {          LdapContext ctx = connetLDAP();          String uid = "zhangsan";          String userDN = "uid=" + uid + "," + "cn=users,dc=cas,dc=mydc";          ctx.destroySubcontext(userDN);      } 

  //修改      public boolean testModify() throws Exception {          boolean result = true;          LdapContext ctx = connetLDAP();          String uid = "zhangsan";          String userDN = "uid=" + uid + "," + "cn=users,dc=cas,dc=mydc";          Attributes attrs = new BasicAttributes(true);          attrs.put("mail", "zhangsan@163.com");          ctx.modifyAttributes(userDN, DirContext.REPLACE_ATTRIBUTE, attrs);          return result;      } 

//查询      public void testSearch() throws Exception {          LdapContext ctx = connetLDAP();          // 设置过滤条件          String uid = "zhangsan";          String filter = "(&(objectClass=top)(objectClass=organizationalPerson)(uid=" + uid + "))";          // 限制要查询的字段内容          String[] attrPersonArray = { "uid", "userPassword", "displayName", "cn", "sn", "mail", "description" };          SearchControls searchControls = new SearchControls();          searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);          // 设置将被返回的Attribute          searchControls.setReturningAttributes(attrPersonArray);          // 三个参数分别为：          // 上下文；          // 要搜索的属性，如果为空或 null，则返回目标上下文中的所有对象；          // 控制搜索的搜索控件，如果为 null，则使用默认的搜索控件          NamingEnumeration<SearchResult> answer = ctx.search("cn=users,dc=cas,dc=mydc", filter.toString(), searchControls);          // 输出查到的数据          while (answer.hasMore()) {              SearchResult result = answer.next();              NamingEnumeration<? extends Attribute> attrs = result.getAttributes().getAll();              while (attrs.hasMore()) {                  Attribute attr = attrs.next();                  System.out.println(attr.getID() + "=" + attr.get());              }              System.out.println("============");          }      }